ECB Keeps Main Interest Rate at Record Low 0.5%

PARIS—The U.S. government shutdown could threaten economic recoveries in the U.S. and around the world if it persists, European Central Bank President Mario Draghi warned, echoing concerns raised elsewhere in Europe about the ripple effects of the standoff.

Mr. Draghi kept the door open to interest-rate cuts and other stimulus measures after the ECB's monthly meeting. The ECB has a "vast array" of tools ready to deploy if...